//
// Works around issue introduced in Backbone 1.1 by https://github.com/jashkenas/backbone/pull/2766
//
// This file is unnecessary under Backbone 1.0 and earlier.
//
// Note that https://github.com/jashkenas/backbone/pull/2890 should hopefully make this irrevelant
//
Backbone.History.prototype.navigate = function(fragment, options) {
  /*jshint curly:false */
  if (!Backbone.History.started) return false;
  if (!options || options === true) options = {trigger: !!options};

  var url = this.root + (fragment = this.getFragment(fragment || ''));

  // Removed from the upstream impl:
  // Strip the fragment of the query and hash for matching.
  // fragment = fragment.replace(pathStripper, '');

  if (this.fragment === fragment) return;
  this.fragment = fragment;

  // Don't include a trailing slash on the root.
  if (fragment === '' && url !== '/') url = url.slice(0, -1);

  // If pushState is available, we use it to set the fragment as a real URL.
  if (this._hasPushState) {
    this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);

  // If hash changes haven't been explicitly disabled, update the hash
  // fragment to store history.
  } else if (this._wantsHashChange) {
    this._updateHash(this.location, fragment, options.replace);
    if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
      // Opening and closing the iframe tricks IE7 and earlier to push a
      // history entry on hash-tag change.  When replace is true, we don't
      // want this.
      if(!options.replace) this.iframe.document.open().close();
      this._updateHash(this.iframe.location, fragment, options.replace);
    }

  // If you've told us that you explicitly don't want fallback hashchange-
  // based history, then `navigate` becomes a page refresh.
  } else {
    return this.location.assign(url);
  }
  if (options.trigger) return this.loadUrl(fragment);
};
